God is great, but we have no knowledge how He is great. We can simply think of gagana, the sky. That is the greatest. That is our . . . but we do not know that millions of skies are within the belly of the Supreme Personality of Godhead. There our estimation, gagana-sadṛśa, is imperfect. How He can be gagana-sadṛśa? Yasyaika-niśvasita-kālam athāvalambya jīvanti loma-vilajā jagad-aṇḍa-nāthāḥ (Bs. 5.48). Jagad-aṇḍa-nāthāḥ. Jagad-aṇḍa means universe, and the gagana is within the universe. Gagana, we cannot see beyond this gagana, but beyond this gagana there is another gagana. In the Bhagavad-gītā . . . you are reading Bhagavad-gītā. You must know it. Paras tasmāt tu bhāvaḥ anyaḥ (BG 8.20): "There is another sky, spiritual sky." Sanātana. Paras tasmāt tu anyaḥ 'vyakto 'vyaktāt sanātanaḥ, sarveṣu naśyatsu na vinaśyati. This gagana will be annihilated at the time of destruction, but that does not annihilate.
So the idea of gagana is not perfect idea of the Supreme. Gagana-sadṛśa, that is limited within the purview of our knowledge because we cannot think that anything can be greater than this big sky. No, He is mahato mahīyān, bigger than the biggest, aṇor aṇīyān, smaller than the smallest. Just like we can imagine atom, the smallest. But atom we can see by some way or other, atom. Six atoms, trasareṇu. Six atoms, when it is combined, we can see through the windows with the sunshine so many trasareṇu. Those small particles which we see through the window with sunshine, they are combination of six atom. They are not original atom. But the atomic constitution of the living entity is a thousand times smaller than the atom.